The quick answer
Start with evidence: identify the object type, artist or publisher claim, medium, edition or signature details, dimensions, condition, and provenance before relying on value claims.
What to photograph
Send the full front, back, signature, edition or plate marks, labels, frame, surface details, damage, repairs, measurements, and any certificate or purchase paperwork.
Authentication limits
Photos can support triage, but recognized artists, editions, and high-value prints may require specialist comparison, catalogue references, provenance, or in-person review.
Condition factors
Fading, stains, tears, cockling, mat burn, surface grime, frame damage, overpaint, and prior restoration can all affect market confidence.
Comparable sales
Comparable sales should match artist identity, title or subject, edition, medium, size, condition, signature status, and documentation.
Need a Warhol print reviewed?
Get a written review built from photos, condition notes, and documentation.
Start an appraisal